Lock.



E. G. ELDRlDGE.

LOCK. I APPLICAHOH FILED JAN. 25, 1917. 1,259,991, Patented Dec, 25,1917,

2 SHEETS-SHE ET l. 7 Q .47 5;. -i\

E. G. ELDRIDGE.

LOCK.

APPLICAHON FILED JAN-25. I917.

Patented Dec. 25, 1917.

2 SHEETSSHEET 2.

ERNEST G. ELDRIDGE, OF ALHAMBRA, CALIFORNIA.

LOCK.

Specification of Letters Patent.

Patented Dec. 25, 1917.

Application filed January 25, 1917. Serial No. 144,329.

* general construction and operation of the lock, and also in details. In my said copending application I have described in general terms a permutation lock in which the main tumbler or tumblers are used to operate both the dead bolt and the latch bolt; and in which the dead bolt is provided with separate means for the locking and the unlocking action.

In said lock, the dead bolt is provided with a locking dog and an unlocking dog adapted to independently engage the tumblers. Some of the improvements herein concerned may be briefly described as follows:

In my present improved lock, the dead lock mechanism is operated by and in connection with the unlocking dog rather than in connection with the locking dog as in my former lock.

The manually operatable means (by which the bolt is operated from the inside of the door) is now arranged to operate directly upon the dead locking means which is itself mounted upon the bolt.

Means are provided for retracting the spring latch whenever the bolt is shot, so as to do away with the engagement of the spring lock mechanism with the tumblers when the bolt is shot, so as to obviate interference with the rotation and setting of the sets the lock for its locking operation. This direct and positive connection provides that the button cannot be pushed in to set the lock for its locking operation until the looking member is; rotated to allow the dog to drop into its notch. This arrangement obviates any liability of the door being locked except by positive wilful action on the part of some person.

In general, the present lock includes many simplifications in detail and improvement in efficiency of action, as will be hereinafter pointed out.

The foregoing indicates some of the main objects of this invention; other objects and other features and accomplishments of the improved lock will appear in the following specification wherein I describe my now preferred form of lock, reference being had to the accompanying drawings in which, for the purpose of this specification, I illustrate said preferred form of look. In these drawings Figure 1 is an inside face view of the lock taken beneath its cover plate, showing the interior mechanism; Fig. 2 is an outside face view of the mechanism, the parts being in their unlocked position in both Figs. 1 and 2; Fig. 3 is an inside face view showing the bolt in its shot position; Fig. 4 is an outside view showing the parts in the same position; Fig. 5 is an outside view showing the parts in substantially the same position, but showing the beginning of the unlocking operation; and Fig. 6 is a vertical cross section taken as indicated on line 66 of Fig. 1.

In the drawings the numeral 10 designates a suitable case which may be of any desired configuration and design. It is a feature of my lock that the mechanism may be included within a small case adapted for use on small and thin doors as well as upon large and thick ones.

In one end of the case, illustrated as the upper end, I mount the dead bolt 11, having a head 12 adapted to be projected through face plate 13 of the lock. In the lower part of the look I place the latch bolt 14; and between the dead bolt and latch bolt I place the tumblers 15 and 16. It will be understood that the lock is not always in the position illustrated. It may, like the lock of my said prior application, be turned upside down, for right or left hand open ing doors; and the head 14* of the latch 14 may be reversed for'inside'or outside open ing doors. The turning of the lock'end for end is allowed of because in my lock there is only one knob shaft; in the other locks of this character there are usually two knobs (a latch knob and a bolt knob) whose relative positions would be changed by up- I permutation tumblers; for the reason that my lock may utilize any one of a great variety of kinds of permutation tumblers. It is only necessary herein to explain that I use such permutation tumblers; that the latch tumbler 15 has a notch 18; and that the tumblers 16 have similar notches 19, all of which notches may be lined up in such a position as is shown in Fig. 5, by suitable manipulation of the shaft :17. The latch tumbler 15 is directly mounted upon the shaft 15 and turns directly therewith. I preferably space the tumbler 15 and the tumblers 16 apart, so as to leave aspace between them as shown in Fig. '6; and the latch bolt operating member 20 projects up into the space between the tumblers and is adapted to be engaged by pin 21'ca'rried by the tumbler 15. Upon rotation of the tumbler 15 in either direction, the pin 21 maybe engaged with the upper end of the member 20 to throw it to such a position as is indicated in dotted lines in Fig. 1. Thismember20 is pivotally mounted at 22, and engages with pins 23 mounted upon the latch bolt 1 1, the pins being so set with relation to the pivot 22 of member 20 that the movement of member '20 in either direction from its normal uprightposition will cause retraction of the latch bolt. That is, rotation of the tumbler 15 in either direction, and movement of-the @pin21 in either direction against the member 20, will cause the member 20 to assume such a position as indicated by dotted lines in Fig. 1 (or a relatively reversed position) and will cause the retraction of the latch bolt. The pin 21 can pass on over the end or the member 20, as indicated in Fig. 1, o that the tumbler 15may be rotated on around for its purposesof rotating tumblers 16. F or the purposes of retracting the latch bolt when the (dead bolt 11 is projected, I provide a connecting .lever '30 pivoted at 31 and having oneend engaging a ,pin 32 set in the deadbolt, whileits other end engages a projection 33 on the latch bolt. hen the dead bolt is moved out ito its position shown in F 3, then the latch vbolt ris retracted by a positive action; and the member 20 is left loose, so that 1t presents no reslstance whatever to the movement of the pin 21 and the pendently of any action or reaction thereon by the latch mechanism. Specifically, this means is in the form described, but I do not limit myself thereto. p

The locking dog 35 is pivoted at 36 to the dead bolt, this pivot 36 being located near the head 12 or" the dead bolt and near the lower edge of the dead bolt; and the dog extending substantially horizontally from the pivot 36 and having an end 35 adapted to enter the notch 18 in tumbler 15. The locking dog engages the tumbler 15 alone, being of only suiiicient width to engage this tumbler, and not to engage the tumblers 16, as shown in Fig. 6. The locking dog has an upward extension 35 above the pivot 36, to which extension the push pin 37 is directly connected at Push pin or button 37 is mounted in head 12 of the deadbolt and has a pair of small notches 37 adapted to be entered by a spring pressed ball 38, or any suitable spring pressed equivalent, so as to hold the button and the locking dog 35 in either one of their positions; that is, either the position shown in Fig. 1 or the position shown in Fig. 3. Pressing in upon the button 37 will depress the end 35 of the locking dog, and throw that end of the locking dog into the notch 18 of tumbler 15 when the notch is rotated to the correct position. Thus, by rotating the tumbler 15 and at the same time pressing in on the push button 37, when the notch 18 comes to position below the end 35 of the locking dog, then the locking dog will move downwardly and its end will enter the notch; and then, upon further rotation of the tumbler 15 in the direction indicated by the arrows in the various views the locking dog will be pushed forward to the position shown in Figs. 3 and at. the forward end of the locking dog engaging the front plate 13 of the lock and thus forming a stop to the forward movement of the locking dog and forming a stop to the forward movement of the bolt 11. When the parts are in this position then the bolt is completely shot. The push button 37 cannot be pushed in, and-set in vposition :to lower -lock- Flu the lock case.

ing dog 35, unless the notch 18 is in position below the end 35 of the locking dog. Thus, two simultaneous, but simple, operations are necessary in order to set the mechanism so that the bolt may be shot; and thus I overcome any liability of the bolt being accidentally shot as it might otherwise be if the button 37 could be pushed in and then the tumbler subsequently rotated to throw the bolt. The tumbler 15 cannot be rotated further in the direction indicated until it is first rotated back to lift the .dog and to thus push the button out. Once out, the button is held by the ball 38 and the dog 35 is thus held up and prevented from dropping back into the notch 18 when that notch is rotated beneath the dog in the subsequent unlocking operations. Normally, the unlocking dog, as well as the locking dog, as will hereinafter be explained, is out of operative relation to the tumblers.

WVhen the locking dog has been lowered into the notch 18, then it is only required to rotate the tumbler 15 in the direction inclicated by the arrow to throw the bolt to the position shown in Figs. 3, 4 and 5. lVhen the bolt reaches this position then the dead lock mechanism is in operative position to lock the bolt against being pushed back into This dead lock mechanism comprises preferably a hook lever which is pivoted at 41 at the back end of the dead bolt and has a hook 42 on its forward end adapted to hook over astationary pin 43; a diagonal surface 44 being provided on the front end of the hook lever so that the front end may ride up over the stationary pin 43 when the bolt is moving in the direction indicated by the arrows in the various views.

The hook lever is moved in the direction indicated by the arrow thereon by a small spring 45; which spring connects between the hook lever 40 and the unlocking dog 46. The unlocking dog 46 is pivoted at 47 to the rear lower end of the dead bolt and has a. transversely extending fence 48 on its front end extending transversely across all of the tumblers 15 and 16 so as to enter the notches 18 and 19 only when all of these notches are lined up in position beneath the interconnected through the medium of two engaging lugs 51 and 52 on the hook lever and unlocking dog, respectively. These interengaging lugs provide that, although the hook lever may move up without moving the locking dog down, the downward movement of the unlocking dog will always move the hook lever up. Suppose now, that the parts are in the position shown in Figs. 3 and 4, and it is desired to retract the dead bolt. The tumblers are manipulated so that all of the notches 18 and 19 are lined up in the position indicated in Fig. 5, beneath the fence 48. The unlocking dog immediately moves in the direction indicated by the arrow to the position shown in Fig. 5, the fence 48 dropping down into the notches 18 and 19. At the same time, through the interaction of lugs 51 and 52, the hook lever 40 has been raised to the position shown in Fig. 5, raising the hook 42 off the stationary pin 43. Then, if the tumbler 15 is rotated in the direction opposite to that indicated by the arrows, the unlocking dog 46 will be pushed rearwardly, and with it the dead bolt will be moved rearwardly, until the parts reach the position shown in Figs. 1 and 2. Rotation of the tumbler 15 in the direction indicated by the arrow will then lift the fence 48 out of the notches 18 and 19, the rear corners of the notches being rounded off as shown at 55; and the lock will then be in its normal unlocked position. Now, although the unlocking dog in its normal position presses against the tumblers, it is out of operative relation to them be cause it is not pressing against them at the zero point; that is, at the point where the notches are all lined up when the unlocking action takes place. This fact allows the tumblers to bechanged in position to change the combination of the look without the necessity of having any means to hold up the fence of the unlocking dog during such operation; and the fact that the locking dog is normally out of operative relation to the tumblers also allows such operation to take place without interference.

I provide a means for operating the dead lock from the inside of the door without the necessity of operating the permutation mechanism; and this arrangement embodies a. throw member pivoted in the case, operated through the medium of a suitable shaft (31, and slotted at its outer end as shown at 62 to engage a pin 63 set in the hook lever 40. Rotation of this member 60 in the direction indicated by the small arrow thereon in Fig. 2 will act upon the pin 63, and upon the lever 40, to move it forwardly and thereby move the dead bolt 11 forwardly. As the dead bolt moves forwardly, the parts will all move to the positions shown in Fig. 4, the hook 42 eventually hooking over the stationary pin 43 and thus locking the dead bolt in its forward position. Conversely, rotation. of the member 60 in the opposite direction will first raise the hook 42 off the stationary pin 43 and will then move the dead bolt back to the original position shown in Figs. 1 and 2.

Spring 45 is sufficiently strong to hold the hook lever over the stationary pin 43, and to hold the hook lever in engagement in the slot 62 of member 60 when member 60 is rotated in the direction opposite to that indicated by the arrow in Fig. 2; yet the spring is not sufliciently strong to overcome the action of spring 50. Spring is sutliciently strong, on the contrary, to overpower the spring 45. A small fiat spring is utilized to bear against the end of member 60 to trictionally hold it in either of its positions.

From the foregoing it will be seen how the present lock is improved in the particulars hereinbefore stated and how the lock is simplified in its construction and action. One particular feature is the interconnection of the spring latch and dead bolt, for the purpose explained. It will be particularly noted that all of the actions of the lock are simple and direct, action taking place through the medium of the minimum number of parts. For instance, the push button 37 is directly and positively connected to the locking dog 35; and the dogs are so located and pivoted that the action of the tumblers on their ends is to push on those ends toward their respective pivots. Thus, in the case of each dog, it will be seen that the force exerted upon their ends by the rotation of the tumblers tends to move their ends down farther into engagement with the tumbler notches, rather than to move the ends upwardly out of engagement with the tumbler notches. These improvements, and others described herein, are the ones I wish to secure by the following claims, without being limited to specific details except as stated in said claims.

Having described a preferred form of my invention, I claim:

1. A lock, embodying a permutation mechanism, a bolt controlled and operated thereby, a latch mechanism also controlled and operated thereby, and means to throw the latch mechanism out of operative relation to the permutation mechanism when the bolt is thrown out.

2. A look, embodying a permutation mech anism, a bolt controlled thereby, a tumbler adapted to move the bolt under control of the permutation mechanism, a latch mechanism operatable by the tumbler, and connective means between the bolt and latch to throw the latch mechanism out of operative relation to the tumbler when the bolt is thrown out.

3. A lock, embodying a permutation mechanism, a bolt whose retraction is controlled thereby, a tumbler adapted to throw the bolt out and to retract the bolt under control of the permutation mechanism, a latch mecha nism operatable by the tumbler, and connective means between the bolt and latch to throw the latch vmechanism out of operative relation to the tumbler when the bolt is thrown out.

4. A lock, embodying a permutation mechanism and a tumbler cooperating therewith, a bolt and mechanism whereby the bolt is operated by the permutation mechanism and the tumbler, a latch and mechanism whereby the latch is operated by the tumbler, and connective means between the bolt and latch to throw the latch mechanism out of operative relation to the tumbler when the bolt is thrown out.

5. Alock, embodying a permutation mechanism and a tumbler cooperating therewith, a bolt, a latch, means connected with the bolt adapted to engage the permutation mechanism and the tumbler and whereby the bolt may be retracted by movement of the tumbler, means connected with the bolt adapted to engage the tumbler whereby the bolt may be thrown out by movement of the tumbler, means connected with the latch whereby the latch may be operated by movement of the tumbler, and connective means between the bolt and latch to throw the latch mechanism out of operative relation to the tumbler when the bolt is thrown out.

6. A. lock, embodying a permutation mechanism, a bolt controlled thereby, a tumbler adapted to move the bolt under control of the permutation mechanism, a spring pressed latch, mechanism for causing retraction of the spring pressed latch by operation of said tumbler, and connective means between the bolt and latch to retract the latch when the bolt is thrown out.

7 A lock, embodying a plurality of tumble-r disks, a latch tumbler disk adapted to cooperate with the other tumbler disks, a bolt, means on the bolt adapted to engage all the tumbler disks, a. latch operated by the latch tumbler, and means whereby the latch is retracted when the bolt is thrown out.

8. Alock, embodying a permutation mechanism and a tumbler cooperating therewith, a bolt, a latch, means connected with the bolt adapted to engage the permutation mechanism and the tumbler and whereby the bolt may be retracted by movement of the tumbler, means connected with bolt adapted to engage the tumbler whereby the bolt may be thrown out by movement of the tumbler, manually operatable means for throwing said last mentioned means to position to engage the tumbler, and means connected with the latch whereby the latch may be operated by movement of the tumbler, and connective means between the bolt and latch to retract the latch when the bolt is thrown out.

9. A lock, embodying a plurality of combination tumblers with notches adapted to be alined, a latch tumbler with a notch adapted, to aline withthe other notches, a

bolt, a dog on the bolt adapted to engage in the notches of all the tumblers, a dog on the bolt adapted to engage the latch tumbler, a latch operated by the latch tumbler, andconnective means between the bolt and latch to retract the latch when the bolt is thrown out.

10. In a lock, the combination of a permutation mechanism, a bolt, means on the bolt to engage the permutation mechanism to throw the bolt out, means on the bolt to engage the permutation mechanism to retract the bolt, dead locking means for the bolt actuated by the retracting means on the bolt.

11. In a lock, the combination of a permutation mechanism, a bolt, means on the bolt to engage the permutation mechanism to throw the bolt out, means onthe bolt to engage the permutation mechanism to retract the bolt, dead locking means for the bolt actuated by the retracting means on the bolt, and manually operatable means actlng upon the dead locking means to operate it and to move the bolt.

12. In a lock, the combination of a permutation mechanism, a bolt, means on the bolt to engage the permutation mechanism to throw the bolt out, means on the bolt to engage the permutatlon mechanism to retract the bolt, dead locking means for the bolt embodying a member pivoted to the bolt and a stationary member adapted to be engaged thereby, and operative connectlon between the retracting means on the bolt and the pivoted dead locking member to operate the dead locking member by operation of the unlocking means.

13. In a lock, the combination of a permutation mechanism, a bolt, means on the bolt to engage the permutation mechanism to throw the bolt out, means on the bolt to engage the permutation mechanism to retract the bolt, dead locking means for the bolt embodying a member pivoted to the bolt and a stationary member adapted to be engaged thereby, operative connection between the retracting means on the bolt and the pivoted dead locking member to operate the dead locking member by operation of the unlocking means, and manually operatable means acting upon the dead locking member to operate it and to move the bolt.

14. In a lock, the combination of a permutation mechanism, a bolt, a dog on the bolt adapted to engage the permutation mechanism to throw the bolt out, another dog on the bolt adapted to engage the permutation mechanism to retract the bolt, a dead locking member pivoted to the bolt, a stationary member adapted to be engaged by the pivoted dead locking member to lock the bolt in its thrown out position, and interconnection between the retracting dog and the dead locking member to cause operation of the dead locking member by operation of the retracting dog.

15. In a lock, the combination of a permutation mechanism, a bolt, a dog on the bolt adapted to engage the permutation mechanism to throw the bolt'out, another dog on the bolt adapted toengage the permutation mechanism to retract the bolt, a dead locking member pivoted to the bolt, a stationary member adapted to be engaged by the pivoted dead locking member to lock the bolt in its thrown out position, interconnection between the retracting dog and the dead lockingmember to cause operation ,of the dead locking member by operation of the retracting dog, andmanuall'y operatable means acting uponthe dead lockingmember to operate it and to move the-bolt I 16. In alock, the combination of arpermutation mechanism embodying a series of disks with notches adapted to be alined, a bolt, a locking dog on the bolt adapted to be thrown into engagement with one of the notched disks, an unlocking dog on the bolt adapted to engage-the alined notches of all the disks, and dead locking means operatively connected with the unlocking dog.

17. In a lock, the combination of a permutation mechanism embodying a series of disks with notches adapted to be alined, a bolt, a locking dog onthe bolt adapted to be thrown into engagement with one of the notched disks, an unlocking dog onthe bolt adapted to engage the alined notches of all the disks, dead locking means operatively connected with the unlocking dog, and manually operatable means acting upon the dead 1looriking means to operate itand move the ISQ-In a lock, the combination of a permutation mechanism embodying a series of disks with notches adapted to be alined, a bolt, a locking dog on the bolt adapted to be thrown into engagement with one of the notched disks, an unlocking dog on the bolt adapted to engage the alined notches of all the disks, and manually operatable means positively connected with the locking dog whose operation throws the locking dog into the notch of the one disk when the disk is turned to bring its notch under said dog.

19. In a lock, the combination of a permutation mechanism embodying a series of disks with notches adapted to be alined, a bolt, a locking dog on the bolt adapted to be thrown into engagement with one of the notched disks, an unlocking dog on the bolt adapted to engage the alined notches of all the disks, and manually operatable means directly and positively connected with the locking dog whose operation throws the locking dog into the notch of the one disk when the disk is turned to bring its notch under said dog.

20. In a lock, the combination of a permutation mechanism embodying a plurality of rotatable disks with notches adapted to be alined, a bolt, a locking dog pivoted to the bolt and adapted to be moved to engage the notch of one disk, a push button on the bolt directly and positively connected to the locking dog to move the dog into the notch of said disk when the disk is turned so that the notch is beneath the dog, an unlocking dog pivoted to the bolt and adapted to engage the alined notches of all the disks, a dead locking lever pivoted to the belt, a stationary member adapted to be engaged by the dead locking lever to lock the bolt against retraction, interengaging means between the said lever and the unlocking dog to move the lever out of engagement with said stationary member when the unlocking dog engages the alined notches of the disks, and manually operatable means acting on the said lever to move it and to move the bolt 21. In a lock, the combination of a permutation mechanism embodying a plurality of rotatable disks with notches adapted to be alined, a bolt, a locking dog pivoted to the bolt and adapted to be moved to engage the notch of one disk, a push button on the bolt directly and positively connected to the locking dog to move the dog into the notch of said disk when the disk is turned so that the notch is beneath the dog, an unlocking dog pivoted to the bolt and adapted to engage the alined notches of all the disks, a dead locking lever pivoted to the bolt, a stationary member adapted to be engaged by the dead locking lever to lock the bolt against retraction, interengaging means between the said lever and the unlocking dog to move the lever out of engagement with said stationary member when the unlocking dog engages the alined notches of the disks, and manually operatable means acting on. the said lever to move it and to move the bolt, said dogs being pivoted at opposite ends of the bolt and extending toward each other with their disk engaging ends near each other.

22. In alock, the combination of a plurality of disk tumblers with notches adapted to be alined, a bolt, and locking and unlocking dogs on the bolt pivoted at opposite ends thereof and extending toward each other from their pivots, their adjacent frecends adapted to engage the tumbler notches.

23. in a lock, the combination of a plurality of disk tumblers with notches adapted to be alined, a bolt, a locking dog pivoted on the bolt near its front end and back along the bolt, its rear free end adapted to engage the notch of one of the tumblers, and an unlocking dog pivoted near the rear end of the bolt and extending forwardly along the bolt, its front free end adapted to engage the alined notches of all the tumblers, the an rangement being such that the tumblers push upon the ends of the dogs toward their respective pivots.

In witness that I claim the foregoing I have hereunto subscribed my name this 19th day of January, 1917. 4

ERNEST G. ELDRIDGE.

\Vitness Enwoon H. BARKELEW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. (3. 

